400395 has 8 divisors (see below), whose sum is σ = 640656. Its totient is φ = 213536.

The previous prime is 400391. The next prime is 400409. The reversal of 400395 is 593004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400395 - 2² = 400391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13332 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (80082).

2⁴⁰⁰³⁹⁵ is an apocalyptic number.

400395 is a deficient number, since it is larger than the sum of its proper divisors (240261).

400395 is a wasteful number, since it uses less digits than its factorization.

400395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26701.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 400395 is about 632.7677298978. The cubic root of 400395 is about 73.7048752012.

Adding to 400395 its reverse (593004), we get a palindrome (993399).

The spelling of 400395 in words is "four hundred thousand, three hundred ninety-five".